Single-blade plane



H. ANDERSON.

SINGLE BLADE PLANE. APPLlcAnoN HLED Nov.22. 192|.

Patented May 2, 1922.

HTI m4 HANS ANDERSON, 0F OAKLAND, CALIFORNIA.

- SINGLE-BLADE PLANE.

Specification of Letters Patent.

Patented May 2, 1922.

Application led November 22, 1921. Serial No. 517,074.

T 0 all to hom t may concern:

Be it known that I, Hans ANDERSON, a citizen of the United States, and aresident of Oakland, county of Alameda and State of California, haveinvented a new and useful Single-Blade Plane, of which the following isa specification.

The present invention relates to improvements in single blade planes andits particular object is to provide a plane that is capable of very lineadjustment, comparatively simple in construction and that is soconstructed and holds the blade in such a manner that it can be used asa block plane as well as a smoothing plane.

)Vith these objects in view I have illustrated the preferred form of myinvention in the accompanying drawing, in which Figure 1 shows alongitudinal cross section through mv plane; Figure 2 a top plan of thesame; Figure 3 a top plan view of a blade supporting block used inconnection with my plane; Figure 4: an end elevation of said block;Figure 5 a side elevation of the same; Figure 6 a longitudinal crosssection through a guiding member used in my device, and Figure 7 an endview of the same.

While I have illustrated vone preferred form of my invention only, itwill he understood that slight changes or modications within the scopeof the claims may be made without departing from the spirit of theinvention.

My plane (1) comprises the bottom plate (2) flanked by two tianges (3)and provided with a transverse slot (4) through which the cutting edge(6) of the blade (7 extends. The blade rests on an inclined plane (8)forming the upper face of a block 9) shown in detail in Figures 3, 4land5. The block is secured to the plate in operative proximity to the slotby means of screws extending through slots (11) in the block and securedto rectangular projections (10) rising from the bottom plate (2). Theslots (11) allow of limited longitudinal adjustment of the blockrelative,y to the bottom plate. A central rea-r portion of the block iscut away to form the recess (12) adapted to receive the guiding member(13) which rests on the seats (14) provided within the recess inparallel relation to the inclined plane of the block. The two seats arejoined at the rear end by a connecting member (16) so that a rectangularhole (17) is formed between the seats and the end member (16) adapted toreceive a downward projection (18) extending from the guiding member(13). The end member (16) is provided with a perforation (19) adapted toreceive the screw (21) which is held against longitudinal motion by thetwo collars (22), the threaded end of which engages a `correspondingthreaded recess in the projection (18) of the guiding member (13) sothat the guiding member may be moved in either direction by means of thescrew (21), which is provided with a milled head to facilitate itshandling.

It will be noticed from the drawing that the screw (21) is supported inparallel relation to the seat as well'as the inclined plane of theblock. rThe blade (7) is provided on its under surface with a pluralityof grooves (24), each of which is adapted to engage a small projection(26) rising from the upper surface of the guiding member (13) so thatthe blade is forced to follow the motions of the guiding member. Theblade is further provided with a slot (29) through which extends thescrew (31) binding the wedge (32) to the inclined plane of the block(9). The wedge is provided with a circular perforation (33) connectingwith a slot (34) which extends from the circle into a heavier portion ofthe wedge so that when the wedge is placed on the blade with itscircular perforation surround ing the screw (31) and is then forceddownward along the inclined p-lane, the slot will engage the head of thescrew (31), and due to its wedging action, will force the blade intofirm contact with. the inclined plane.

To intensify the contact and to` concentrate its intensity on theforward or cutting edge of the blade, I provide a screw (36) in theupper end of the wedge adapted to be screwed through the same and topress against an adjacent portion of the blade, whereby the upper end ofthe wedge is forced away from the blade and the pres sure of the lowerend of the wedge against the blade intensified.

It will be seen from this description that the construction of my planeoers many advantages relative to its adjustability and the openness ofits structure. It offers three distinct means for adjustment comprisingthe longitudinal adjustment of the blade supporting block; (9) theadjustment of the blade on the same b v means of the guiding member (13)and the adjustment of the pressure brought to bear on the front end ofthe blade by means of the screw A handle (37) is secured to the plane inthe usual manner and a means for guiding the front end of the plane isprovided in the transverse member (38),

l claim:

l. ln a single rblade plane, means for adjustablv supporting the bladein an inclined position, comprising a block having a slanting bladeengaging surface7 a recess in the rear end of the block having aslanting bottom parallel to the block surface with a central hole, aguiding member'operatively engaging the undersuriiace of the bladeadapted to ride on the recess bottom having a downward projectionextending through the hole, andlmeans supported in the rearV Wall ofthey block threadedly engaging the downward projection for adjusting theposition of the guiding member.

2. ln a single blade plane, means for adjustably supporting the blade inan inclined position, comprising a block having a slanting bladeengaging surface, a recess in the and tivo shoulders engaging oppositesides of the rear wall for holding the same against longitudinal motion.

HANS ANDERSON.

